Rockwell updates RSLogix 5000 engineering software
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Rockwell Automation product story
Edited by the Engineeringtalk editorial team
Oct 15, 2008
Rockwell Automation has introduced three advanced process control (APC) function blocks in the latest version of its RSLogix 5000 engineering software.
The function blocks offer process-users APC technology that is easier to implement.
The company has also introduced a redundancy module and has improved system availability.
The APC blocks are suitable for process users in industries such as fermentation control in biotech, temperature control in glass manufacturing, chlorination and pH control in water treatment and basis weight and moisture control in paper making.
Because these applications have a longer dead time or interaction between multiple I/Os, process users often require a level of control flexibility that is not found in traditional PID-based systems.
The APC blocks provide compensation for long, dead-time processes and allow simpler multivariable control with automatic tuning built-in.
Configuration is done within the RSLogix 5000 engineering software: internal model control controls a single process variable by manipulating a single output using a predictive algorithm, while coordinated control manages a single process variable by manipulating as many as three outputs.
This technology can be used to optimise an economic constraint, such as energy consumption, to control multiple process variables.
Modular multivariable control manages two interacting process variables to target values using up to three control outputs.
This technology is similar to coordinated control in that it can help optimise multiple economic constraints to control multiple process variables.
Allen-Bradley Controllogix redundancy configuration is a main function of the Rockwell Automation process automation system.
The new redundancy module (RM) improves the configuration by improving the throughput capacity and switchover time.
The redundancy configuration supports multiple controllers in one chassis and expands the processing capacity to accommodate larger and more complex control projects.
User-defined instructions are also supported in the redundancy configuration.
The runtime partial import feature will help users to deploy, upgrade and maintain continuous process applications without the risk of downtime.
On a running system, users can add programs, routines and user-defined instructions and replace existing programs and routines from the RSLogix 5000 engineering environment.
Faster control strategy changes can be made without affecting production.
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